Keystones — Lintel
Five GCSE retrieval questions · 10 May 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
86000000
Answer: 8.6 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x + 21
Answer: (x - 3)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 15cm, angle = 37°. Find adjacent side
Answer: 12cm -
4. Ratio Mixed ratio problems
£258.00 is shared between A and B in the ratio 1:2. How much does A receive?
Answer: £86.00 -
5. Statistics Mean
Calculate the mean of: 48, 47, 8, 27, 46, 24, 24, 15
Answer: 29.9